Lub caij nplooj ntoos hlav pin, tseem hu ua tus pin dov, yog ib hom fastener siv los txuas ob lossis ntau lub tshuab. Lawv hu ua "caij nplooj ntoos hlav pins" vim tias lawv muaj lub caij nplooj ntoos hlav uas nthuav dav thaum muab tso rau. Dab tsi yog qhov tsis meej pem, txawm li cas los xij, yog lawv qhov loj me. Lawv dav dua cov qhov uas lawv tau muab tso rau hauv, ua rau ntau tus xav tias lawv ua haujlwm li cas.
Mechanics ntawm Spring Pins
Txawm hais tias lawv qhov dav dua li qhov lawv tau muab tso rau hauv, lub caij nplooj ntoos hlav pins yuav ua haujlwm vim tias lawv yuav deform thiab nthuav dav. Lawv muaj tsawg kawg yog ib chav uas tso cai rau lawv nkag mus rau lub cargo tuav. Thaum sab hauv, lub caij nplooj ntoos hlav pins nthuav, ua rau lawv nias tawm tsam sab hauv phab ntsa ntawm lub qhov. Qhov compression no tseem yuav tshwm sim kom txog thaum lub caij nplooj ntoos hlav pin ncav cuag tib txoj kab uas hla ntawm lub qhov.
Coil caij nplooj ntoos hlav pin
Feem ntau hom caij nplooj ntoos hlav pin yog coiled. Kuj tseem hu ua coil caij nplooj ntoos hlav tus pin, nws muaj lub caij nplooj ntoo hlav uas nthuav tawm thaum muab tso rau hauv lub qhov. Lawv yog tsim los ntawm kev tsim cov hlau strips rau hauv ib lub voj voog. Thaum muab tso rau, lub coil caij nplooj ntoos hlav pins yuav pib nthuav, tsim kom muaj ib puag ncig muaj zog thiab ruaj ntseg rau cov khoom siv sib txuas.
Muaj peb feem ntau lees paub thiab lees txais cov qauv thaum nws los tsim cov coil caij nplooj ntoos hlav pins, suav nrog:
ISO 8750 Kev Tswj Xyuas
TS EN ISO 8748 Cov
ISO 8751 Kev Tswj Xyuas
Slotted caij nplooj ntoos hlav pin
Kuj tseem hu ua C tus pin, lub caij nplooj ntoos hlav slotted muaj cov hlua khi ntawm cov hlau, hlau, txhuas, lossis lwm yam hlau uas nthuav thaum muab tso rau. Lawv cia siab rau tib txoj cai compression li coil caij nplooj ntoos hlav pins, tab sis lawv muaj ib tug yooj yim tsim. Es tsis txhob coil springs, lawv siv hlau strips uas nthuav thiab compress nyob rau hauv lub qhov lawv muab tso rau hauv.
Caij nplooj ntoos hlav Pins vs Cotter Pins: Qhov txawv yog dab tsi?
Txawm hais tias lawv yog ob qho tib si siv los txuas cov khoom, lub caij nplooj ntoos hlav pins tsis zoo ib yam li cotter pins. Ib tug cotter tus pin tsuas yog ib tug hlau fastener nrog ob daim ntev ntawm cov hlau uas deform thaum tso. Thaum tus pin cotter yog khoov, nws tuav cov khoom ua ke. Txawm li cas los xij, cotter pins feem ntau tsis rov qab mus rau lawv qhov qub -- yam tsawg kawg yog tsis muaj kev cuam tshuam tib neeg.
Caij nplooj ntoos hlav pins tau nyob ib ncig ntawm ib nrab xyoo pua. Lub ntiaj teb thawj coil caij nplooj ntoos hlav tau tsim nyob rau hauv 1948 los ntawm German aviation kws kho tsheb thiab pilot Hermann Kohl. Txij thaum ntawd los, lawv tau dhau los ua cov khoom siv hluav taws xob uas siv hauv cov tshuab hnyav, tsheb, dav hlau thiab txawm tias cov rooj tog hauv tsev.